Keeping Cool with Wind Magic

If it's magic, it doesn't have to adhere to the rules of our science. It's up to you to decide whether you want to make your magic scientifically correct or not. A magician can create an area of air around their body that would keep them comfortable temperaturewise. They just can. The air would be at the right temperature all the time because magic not because thermodynamics.

If the magic is (as you imply) based on being able to move air (as opposed to changing its temperature, etc), then a breeze would definitely be the way to go. Stagnant air around the body would get hot, no matter what the season.

Air cooling is going to be helped by having appropriate clothing. Take the robes worn by desert cultures in the Middle East for example. Researchers did some experimenting and found that the style allows air to flow through them like a chimney which creates the cooling effect. Moving air will also help evaporate sweat faster.

Evaporation is the most efficient means of cooling (due to the latent heat energy involved in turning liquid water into a gas), but forced evaporation due to moving air is even better, so yes, you'd want to keep a breeze going to cool a person.

That said, when you're not sweaty (so that there's no evaporation), moving air can either heat you up or cool you down, depending on whether you're hotter than it or not. You can test this by blowing on your arm in a sauna; the spot where you're blowing gets uncomfortably hot. Try it again in a normal-temperature room, and the spot where you're blowing feels slightly cooler.

If you wanted to get super scientific with it, air doesn't conduct heat very well; it's a gas. You can use that to your advantage. If you made the area less dense the temperature would drop, like how a can of spray paint gets cold when you spray it.

Same idea but on a larger scale - think of it like altitude. The air on the top of a mountain peak is colder than the air on the desert floor. Could the mage "expand" the air around them/decrease the pressure to make it feel like they're on a mountain? Moving the molecules further apart will drop the temp. Fun yet pointless side plot: one of the cast gets altitude sickness.

Honestly though, it's magic. You don't have to explain it. You could say "magic made it cold" and I'd buy it.

Depending on the magical strength of the user they could pull air down to them from a much higher, colder elevation.

Blinkk said:

If you wanted to get super scientific with it, air doesn't conduct heat very well; it's a gas. You can use that to your advantage. If you made the area less dense the temperature would drop, like how a can of spray paint gets cold when you spray it..

Click to expand...

ANother scientific aspect of air is that "heat" in air is actually caused by friction and "motion" of the air particles. Imagine a pool table the size of a football field and imagine a million billiard balls zipping around and colliding with each other. The faster the balls move, the more they collide with each other, the "hotter" the temperature. So, if you have the magical ability to control air and by extension air particles, you could actually DIRECTLY control temperature by controlling the frequency and intensity of the collisions and the velocity of the air molecules. Slow the velocity down and you lower the temperature. Speed the velocity up and you raise the temperature.

If you actually "Stop" the motion of the air molecules all together then you will have reached absolute zero which is the coldest anything can get in this universe, -273 degrees Celsius or 0 degrees Kelvin.

There you go